Instead of having drivers register the notifier with explicit code just
have them provide a dma_unmap callback op in their driver ops and rely on
the core code to wire it up.
Suggested-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NKevin Tian <kevin.tian@intel.com>
Reviewed-by: NTony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: NEric Farman <farman@linux.ibm.com>
Reviewed-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1-v4-681e038e30fd+78-vfio_unmap_notif_jgg@nvidia.comSigned-off-by: NAlex Williamson <alex.williamson@redhat.com>